The elastic behaviour of TeO2 glass under uniaxial and hydrostatic pressure

Lambson, E. F.; Saunders, G. A.; Bridge, B.; El-Mallawany, R.

doi:10.1016/0022-3093(84)90128-5

Cited by 180 publications

(59 citation statements)

References 23 publications

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“…) [25] and revealed that the present glasses are more bonded ternary glass networks. The present data will be added to other data of tellurite glasses [26][27][28][29][30][31][32] to make the behavior of these special glasses clear.…”

Section: Resultsmentioning

confidence: 68%

“…The increase of TiO 2 in the presented glass systems increases T g from 370 to 420°C, T c from 513 to 596°C, T m from 750 to 800°C and S from 143 to 176°C, respectively. Parameter K g increased from 0.6 to 0.86 which is higher than the value for pure TeO 2 (0.41) [25]. The T g is an increasing function of both ¯n c and F¯ [25]:…”

Section: Resultsmentioning

confidence: 73%

“…Parameter K g increased from 0.6 to 0.86 which is higher than the value for pure TeO 2 (0.41) [25]. The T g is an increasing function of both ¯n c and F¯ [25]:…”

Section: Resultsmentioning

confidence: 73%

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Optical and Thermal Properties of Some Tellurite Glasses

El‐Mallawany¹

2017

AJOP

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Abstract:Tellurite glasses in the form (95-X) TEO 2 -5NB 2 O 5 -XTIO 2 , X= 5.0, 7.5, 10.0 and 12.5 mol % have been successfully prepared by the melt quenching technique. Density ρ and molar volume V have been measured. UV-Visible absorption spectra for the presented ternary tellurite glass systems have been measured in the wavelength range 200-850 nm. The optical band gap, E g , and refractive index, n, of the presented glass systems have been calculated by using the derivation absorption spectrum fitting (DASF) and absorption spectrum fitting (ASF) methods. Also, Urbach's energy, ∆E for tellurite glass systems was obtained using the absorption spectrum fitting (ASF) method. Comparison between both methods has been presented. Differential thermal analysis (DTA) for the prepared glasses with systematic heating rate 10°C/min has been carried out. The glass transition temperature, T g , onset crystallization temperature, T c , melting temperature, T m , glass stability range, S, and glass factor, K g , of the present glasses have been measured. The average cross-link density, ¯n c , number of bonds per unit volume, n b , and average stretching force constant, F¯, have been calculated.

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Section: Resultsmentioning

confidence: 68%

Section: Resultsmentioning

confidence: 73%

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Optical and Thermal Properties of Some Tellurite Glasses

El‐Mallawany¹

2017

AJOP

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“…The broad band in the range of 640-780 cm -1 is due to the vibrations of TeO 3 trigonal pyramid, TeO 4 tetragonal pyramid [25] and VO 4 structural units [22]. The absorption band at 850 cm -1 is due to the asymmetric vibrations of V-O-V groups of VO 5 polyhedra [26] ge is assigned to the vibrations of the stretching vibrations of the isolated VO 2 groups in VO 4 polyhedra [27], while the weak band at 1020 cm -1 is related to the vibrations of V=O bond of the VO 5 groups [28].…”

Section: Ftir Spectramentioning

confidence: 99%

Conductivity Studies in Proton Irradiated AgI-Ag2O-V2O5-TeO2 Super-Ionic Glass System

Sharma¹,

Kanchan²,

Pant³

et al. 2010

MSA

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“…Some reviews [11][12][13][14][15] show that dissolution of the crucible into the melt can be advantageous or detrimental to the mechanical and chemical properties of the resultant glass. Stanworth [15] found that zirconia crucibles showed resistance to chemical attack by tellurite glasses.…”

Section: Key Observations From Fy2010 Literature Surveymentioning

confidence: 99%

Alternative Electrochemical Salt Waste Forms, Summary of FY2010 Results

Riley¹,

Rieck²,

Crum³

et al. 2010

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SUMMARYIn FY2009, the Pacific Northwest National Laboratory (PNNL) performed scoping studies to down-select two candidate waste forms for spent electrochemical salt, tellurite (TeO 2 -based) glasses and high-halide minerals. Both candidates showed promise with acceptable Product Consistency Test (PCT) responses (i.e., an assessment of chemical durability) and immobilization of at least 10 mass% fission product waste stream. These candidates were investigated in FY2010.Sodalite was successfully synthesized by the sol-gel method. The vast majority of the dried sol-gel consisted of sodalite with small amounts of alumino-silicates and unreacted salt. Upon firing the powders made by sol-gel, the primary phase observed was sodalite with the addition of various amounts of nepheline, carnegieite, lithium silicate, and lanthanide oxides. The amounts of sodalite, nepheline, and carnegieite varied with firing temperature, as did the bulk density of the fired pellets, sol-gel process chemistry, and the amount of glass sintering aid added to the batch. As the firing temperature was increased from 850°C to 950°C, chloride volatility increased, the fraction of sodalite decreased, and the fractions of nepheline and carnegieite increased. This indicates that the sodalite structure is not stable and begins to convert to nepheline and carnegieite under these conditions at 950°C. Density has an inverse relationship with firing temperature. The addition of NBS-1, a borosilicate glass sintering aid, had a positive effect on bulk density and increased the stability of the sodalite structure. A summary data table for FY2010 halide mineral investigations is presented in Table S1.1. Table S1.1. Summary data for FY2010 halide mineral investigations. "WL" denotes the waste loading (in mass%); "Firing T" denotes the firing temperature (in °C); For the Phase Assemblage, "S" denotes sodalite, "N" denotes nepheline + carnegieite, and "L" denotes lithium silicate phases determined by Xray diffraction. NL Na and NL Cl denote the sodium and chlorine normalized release, respectively, from the PCT. At the beginning of FY2010, an in-depth literature review kicked off the tellurite glasses study. The review was aimed at compiling data for chemical durability and mixed chloride incorporation for tellurite glasses. The literature review led the authors to four binary and one ternary systems for further investigation, which include TeO 2 plus the following: PbO, Al 2 O 3 -B 2 O 3 , WO 3 , P 2 O 5 , or ZnO. Each system was studied with and without a mixed-chloride simulated electrochemical salt waste stream, and the literature review provided the starting points for the baseline compositions as well as starting points for melting temperature, compatible crucible types, etc. The most promising glasses in each system were scaled up from 5 g scoping study batches to 20 g batches which were analyzed using the PCT. Both asfabricated samples and samples exposed to PCT were analyzed for phase separation or undissolved materials. Table S1.2 summarizes the result...

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The elastic behaviour of TeO2 glass under uniaxial and hydrostatic pressure

Cited by 180 publications

References 23 publications

Optical and Thermal Properties of Some Tellurite Glasses

Optical and Thermal Properties of Some Tellurite Glasses

Conductivity Studies in Proton Irradiated AgI-Ag2O-V2O5-TeO2 Super-Ionic Glass System

Alternative Electrochemical Salt Waste Forms, Summary of FY2010 Results

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